Find ALL subgame perfect equilibria of the following extensive form

game with perfect information. Show your work. [For any payoff pair (x, y), x is the payoff of player 1 and y is the payoff of player 2.]

C o (1,9) 4 B D E 2 G H (4, 4) (2,5) (1,6) (3, 1) (1, 2) (3,0) (7,1)